/**
 * Rust source symbol extraction.
 *
 * Extracts fn, struct, enum, trait, impl, type, const, static and mod with
 * line-anchored regexes. Dependency edges do not come from here — `use` and
 * `mod` declarations are read by `import-extractor.ts` and resolved against the
 * crate's `Cargo.toml` by `module-resolver.ts`.
 *
 * ### Why there is no native `syn` parser
 *
 * There used to be a path that shelled out to a cargo subproject for real AST
 * parsing. It resolved that subproject relative to `process.cwd()` — the
 * *indexed project*, not the wstack installation — and the crate has never
 * existed in this repository. So the branch was unreachable except in the one
 * case where it must never fire: an indexed repository that happens to contain
 * `tools/Cargo.toml`, where indexing would have run `cargo run` inside the
 * user's checkout and written to `tools/syn-parser/src/input.rs`.
 *
 * Indexing reads a repository; it does not execute its build or write to its
 * working tree. Reinstating native parsing means shipping the crate inside the
 * wstack installation and resolving it from there — never from the scan target.
 */
import type { FileSymbols, SymbolLang } from './schema.js';
export declare function parseSymbols(opts: {
    file: string;
    content: string;
    lang: SymbolLang;
}): Promise<FileSymbols>;
export { detectLang } from './languages.js';
/**
 * Replace comments and string/char literal contents with spaces, keeping every
 * offset and newline intact so match positions map straight back to the
 * original source. Quote characters survive, so the lifetime guard
 * (`'static`) still sees its apostrophe.
 */
export declare function maskRustNonCode(src: string): string;
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